CN216579026U - Core-pulling injection mold for sliding block in rear mold of front bumper decorative plate - Google Patents

Abstract

The utility model relates to the field of core pulling mechanisms of injection molds, in particular to a core pulling injection mold of a sliding block in a rear mold of a front bumper decorative plate, which comprises a sliding block, a shovel base, a spring and a limiting screw, wherein a convex column extending towards a mold cavity is arranged on the sliding block, one end of the convex column is connected with the sliding block, the other end of the convex column protrudes outwards to form a boss, the connecting part of the convex column and the boss forms a step, the cross sections of the convex column and the boss are the same in shape, one side of the convex column protrudes outwards to form a convex plate positioned beside the boss, the protruding distance of the convex plate is greater than that of the boss, and a groove which is not communicated with the interior of the mold cavity is arranged on one side of the convex plate, which is far away from the boss. The boss is arranged in the trompil position that forms in the buckle, and the flange is used for forming the bottom of buckle, and during the die sinking, the flange separates with the cover half earlier, thereby the recess is used for getting into the air and is convenient for boss and product separation, has solved how to loose core in order to form the technical problem of buckle to the product.

Description

Core-pulling injection mold for sliding block in rear mold of front bumper decorative plate

Technical Field

The utility model relates to the field of core-pulling mechanisms of injection molds, in particular to a core-pulling injection mold for a sliding block in a rear mold of a front bumper decorative plate.

Background

As shown in fig. 1, a front bumper fascia 1 has a plurality of clips 1a, and fig. 2 illustrates a cross section of one of the clips 1 a. As shown in fig. 3, normally, in an injection mold, an inclined top core-pulling mechanism 2 is used for forming a buckle 1a, the inclined top core-pulling mechanism 2 makes the mold structure complicated, increases assembly difficulty for a bench worker, and the push-out supporting surfaces of the buckles 1a at two ends of a product 1 are less at a parting surface of the product, so that if the push-out balance cannot be achieved at the moment of push-out, one end of the buckle 1a is tilted, and further, an inclined top damage 1b shown in fig. 4 is caused, and the top damage 1b is located in an a surface area of the buckle 1a, which is one of the problems troubling such products.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a front bumper decorative board rear mould inner slide block loose core injection mold to solve the prior art problem.

In order to solve the problems of the prior art, the utility model adopts the technical scheme that:

a core-pulling injection mold for a slider in a rear mold of a front bumper decorative plate comprises a slider, a shovel base, a spring and a limit screw, wherein the slider is connected with a fixed mold in a sliding manner, the slider is provided with a convex column extending towards a mold cavity and is fixedly connected with a movable mold, the shovel base is connected with the slider in a sliding manner, in the mold closing process, the slider moves towards the mold cavity under the guide of the shovel base, the spring is arranged between the slider and the fixed mold, the spring enables the slider to always have the trend of moving towards the direction far away from the mold cavity through the self resilience force, the limit screw is arranged at one end, far away from the mold cavity, of the slider when the spring is completely rebounded, the slider is contacted with the limit screw, one end of the convex column is connected with the slider, the other end of the convex column protrudes outwards to form a boss, the connecting part of the convex column and the boss forms a step, the cross section shapes of the convex column and the boss are the same, one side of the convex column protrudes outwards to form a convex plate positioned beside the boss, the convex distance of the convex plate is greater than that of the boss, and a groove which is not communicated with the inside of the die cavity is formed in the surface, far away from the boss, of the convex plate.

Preferably, the shovel base comprises an insert and an inclined guide post, the inclined guide post is fixedly connected with the movable die through the insert, the inclined guide post inclines towards the direction far away from the movable die and the die cavity, and the slide block is provided with an inclined guide groove in sliding fit with the inclined guide post.

Preferably, the slider is provided with a blind hole for accommodating the spring.

Preferably, the fixed die further comprises a pressing plate, the pressing plate is fixedly connected with the fixed die, and the pressing plate abuts against one surface, far away from the fixed die, of the sliding block.

Preferably, the pressing plate is provided with an opening for avoiding the shovel base.

Preferably, the pressure plate is fixedly connected with the fixed die through a bolt.

Compared with the prior art, the beneficial effect of this application is:

this application fills the space in the die cavity through boss and flange in order to form the buckle, and the boss is arranged in forming the trompil position in the buckle, and the flange is used for forming the bottom of buckle. During the die sinking, the movable mould drives the shovel base and keeps away from for the slider, the slider moves towards the direction of keeping away from the die cavity under the guide of shovel base, the flange separates with the cover half earlier, thereby the recess is used for getting into the air and is convenient for boss and product separation, movable mould and cover half after-separating completely, slider and shovel base separation, the slider contacts with spacing screw under the resilience force effect of spring, thereby make the slider stop in definite position, shovel base and slider sliding connection once more when being convenient for the compound die, how to loose core the technical problem in order to form the buckle to the product has been solved.

Drawings

FIG. 1 is a perspective view of a product;

FIG. 2 is a perspective sectional view at section A-A of FIG. 1;

FIG. 3 is a perspective view of a prior art pitched roof core pulling mechanism;

FIG. 4 is a perspective view of a prior art product after core pulling at the slanted ejecting end;

FIG. 5 is a schematic view of the present application installed in an injection mold;

FIG. 6 is an exploded perspective view of the present application;

the reference numbers in the figures are:

1-product; 1 a-buckling; 1 b-top injury;

2-a core-pulling mechanism of the inclined top;

3-a slide block; 3 a-a convex column; 3a 1-boss; 3a 2-convex plate; 3a 3-groove; 3 b-an inclined guide groove; 3 c-blind hole;

4-shovel base; 4 a-an insert; 4 b-an oblique guide post;

5-a spring;

6-a limit screw;

7-pressing a plate; 7 a-opening a hole; 7 b-bolt.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in fig. 5 and 6, the present application provides:

a front bumper decorative plate rear mold inner slide block core-pulling injection mold comprises a slide block 3, a shovel base 4, a spring 5 and a limit screw 6, wherein the slide block 3 is in sliding connection with a fixed mold, a convex column 3a extending towards a mold cavity is arranged on the slide block 3, the shovel base 4 is fixedly connected with a movable mold, the shovel base 4 is in sliding connection with the slide block 3, in the mold closing process, the slide block 3 moves towards the mold cavity under the guide of the shovel base 4, the spring 5 is installed between the slide block 3 and the fixed mold, the spring 5 enables the slide block 3 to always have the trend of moving towards the direction far away from the mold cavity through the self resilience force, the limit screw 6 is arranged at one end of the slide block 3 far away from the mold cavity, the slide block 3 is in contact with the limit screw 6 when the spring 5 is completely rebounded, one end of the convex column 3a is connected with the slide block 3, the other end of the convex column 3a protrudes outwards to form a boss 3a1, and the connecting part of the convex column 3a1 forms a step, the cross sections of the convex column 3a and the boss 3a1 are the same, one side of the convex column 3a protrudes outwards to form a convex plate 3a2 which is positioned at the side of the boss 3a1, the protruding distance of the convex plate 3a2 is larger than that of the boss 3a1, and a groove 3a3 which is not communicated with the inside of the mold cavity is arranged on one surface of the convex plate 3a2 which is far away from the boss 3a 1.

Based on the above embodiments, the technical problem that the present application intends to solve is how to perform core pulling on the product 1 to form the buckle 1 a. To this end, the present application fills the void in the mold cavity with boss 3a1 and boss 3a2 to form clip 1a, boss 3a1 to form the open hole site in clip 1a, and boss 3a2 to form the bottom of clip 1 a. During the compound die, the movable mould drives shovel base 4 and keeps away from for slider 3, slider 3 moves towards the direction of keeping away from the die cavity under the guide of shovel base 4, protruding board 3a2 separates with the cover half earlier, thereby recess 3a3 is used for getting into the air and be convenient for boss 3a1 and product 1 separation, the movable mould separates the back with the cover half completely, slider 3 separates with shovel base 4, slider 3 contacts with stop screw 6 under spring 5's resilience force effect, thereby make slider 3 stop in definite position, shovel base 4 is sliding connection with slider 3 once more when being convenient for the compound die.

Further:

the shovel base 4 comprises an insert 4a and an inclined guide post 4b, the inclined guide post 4b is fixedly connected with the movable die through the insert 4a, the inclined guide post 4b inclines towards the direction far away from the movable die and the die cavity, and an inclined guide groove 3b in sliding fit with the inclined guide post 4b is arranged on the sliding block 3.

Based on the above-described embodiment, the technical problem that the present application intends to solve is how to cause the blade base 4 to convert the mold clamping force into the driving force that drives the slide 3 away from the mold cavity. Therefore, when the oblique guide post 4b is connected with the oblique guide groove 3b in a sliding mode, the oblique guide post 4b converts the movement perpendicular to the direction of the fixed die into the movement of the sliding block 3 parallel to the direction of the fixed die.

Further:

the slider 3 is provided with a blind hole 3c for accommodating the spring 5.

Based on the above-described embodiment, the technical problem that the present application intends to solve is how to mount the spring 5. For this reason, this application installs spring 5 through blind hole 3c, and blind hole 3c makes the axis of spring 5 be on a parallel with self resilience direction.

Further:

still include clamp plate 7, clamp plate 7 and cover half fixed connection, clamp plate 7 supports and leans on the one side of keeping away from the cover half at slider 3.

Based on the above embodiments, the technical problem to be solved by the present application is how to limit the position of the slider 3 so that the slider can only slide on the fixed mold parallel to the mold opening direction after the mold opening. For this purpose, the present application presses the slider 3 by means of the pressure plate 7.

Further:

the pressure plate 7 is provided with an opening 7a for avoiding the shovel base 4.

Further:

the pressing plate 7 is fixedly connected with the fixed die through a bolt 7 b.

The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (6)

1. The utility model provides a slider injection mold of loosing core in preceding bumper decorative board rear mould, including slider (3), shovel base (4), spring (5) and spacing screw (6), slider (3) and cover half sliding connection, be provided with on slider (3) and move towards projection (3a) that the die cavity extends, shovel base (4) and movable mould fixed connection, shovel base (4) and slider (3) sliding connection, in the compound die in-process, slider (3) move towards the die cavity under the guide of shovel base (4), spring (5) are installed between slider (3) and cover half, spring (5) make slider (3) have the trend of moving towards the direction of keeping away from the die cavity all the time through the resilience force of self, spacing screw (6) set up the one end of keeping away from the die cavity at slider (3), slider (3) and spacing screw (6) contact when spring (5) kick-back completely, its characterized in that, one end of the convex column (3a) is connected with the slider (3), the other end of the convex column (3a) protrudes outwards to form a boss (3a1), a step is formed at the connecting part of the convex column (3a) and the boss (3a1), the cross sections of the convex column (3a) and the boss (3a1) are the same in shape, one side of the convex column (3a) protrudes outwards to form a convex plate (3a2) located beside the boss (3a1), the protruding distance of the convex plate (3a2) is larger than that of the boss (3a1), and a groove (3a3) which is not communicated with the interior of the die cavity is formed in the surface, away from the boss (3a1), of the convex plate (3a 2).

2. The front bumper decorative plate rear in-mold slider core-pulling injection mold according to claim 1, characterized in that the shovel base (4) comprises an insert (4a) and an inclined guide post (4b), the inclined guide post (4b) is fixedly connected with the movable mold through the insert (4a), the inclined guide post (4b) inclines towards the direction far away from the movable mold and the mold cavity, and the slider (3) is provided with an inclined guide groove (3b) which is in sliding fit with the inclined guide post (4 b).

3. The front bumper decorative plate rear in-mold slider core-pulling injection mold according to claim 1, characterized in that the slider (3) is provided with a blind hole (3c) for accommodating the spring (5).

4. The front bumper decorative plate rear in-mold slider core pulling injection mold according to claim 1, characterized by further comprising a pressing plate (7), wherein the pressing plate (7) is fixedly connected with the fixed mold, and the pressing plate (7) abuts against one surface of the slider (3) far away from the fixed mold.

5. The front bumper decorative plate rear in-mold slider core-pulling injection mold according to claim 4, characterized in that the pressure plate (7) is provided with an opening (7a) for avoiding the shovel base (4).

6. The front bumper decorative plate rear in-mold slider core-pulling injection mold according to claim 4, characterized in that the pressure plate (7) is fixedly connected with the fixed mold through bolts (7 b).

Images